IL6 and juvenile polyposis syndrome: The positive likelihood ratios for IL-6 IL-4, and IL-6/IL-4 in synovial fluid of patients with PJI were 1.90, 11.96 and 71.33, the negative likelihood ratios were 0.17, 0.30, and 0.19, and the DOR were 11.18, 39.87, and 377.52, respectively.